DM8168,分辨率问题

Chu Hi，

网络摄像头进来，就是通过网络输入DM8168。DM8168解码是支持1600x1200的分辨率，需要修改最大支持的输入高度大于1200.

Chris Hi，

感谢您的回复，请问应该在哪里改呢，还有2048*1536的分辨率。

你好，

本地解码的例子应该是可以支持大于1920x1080的码流的。请问你是否有尝试过？

Chris Hi，

感谢您的回复，我试了本地的解码例子，分辨率是1600*1200，播放不了。接收数据的线程里有组合I帧的部分：

// If I frame is recieved in multiple packets we need to accumulate them into one buffer - First packet
                    if(pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail] == 0x67 && pObj->gIPNC_info->readSizeV < 200)
                    {
                        printf("\nGot a frame in multiple packets-Start\n");
                        tmpSize += pObj->gIPNC_info->readSizeV;
                        pObj->gIPNC_info->rVBTail = pObj->gIPNC_info->readSizeV;
                        if(pObj->codecType == VCODEC_TYPE_H264)
                        {
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+0]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+1]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+2]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+3]    = 0x01;
                         pObj->gIPNC_info->rVBTail += 4;
                         tmpSize += 4;
                         pObj->gIPNC_info->readVidBuf += pObj->gIPNC_info->rVBTail;
                        }
                        continue;
                    }
                    // If I frame is recieved in multiple packets we need to accumulate them into one buffer - Middle packet
                    if(tmpSize > 0 && pObj->gIPNC_info->readVidBuf[0] == 0x68)
                    {
                        printf("\nGot a frame in multiple packets-middle\n");
                        tmpSize += pObj->gIPNC_info->readSizeV;
                        pObj->gIPNC_info->rVBTail = pObj->gIPNC_info->readSizeV;
                        if(pObj->codecType == VCODEC_TYPE_H264)
                        {
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+0]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+1]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+2]    = 0x00;
                         pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail+3]    = 0x01;
                         pObj->gIPNC_info->rVBTail += 4;
                         tmpSize += 4;
                         pObj->gIPNC_info->readVidBuf += pObj->gIPNC_info->rVBTail;
                        }
                        continue;
                    }
                    // If I frame is recieved in multiple packets we need to accumulate them into one buffer - Last packet
                    if(tmpSize > 0 && pObj->gIPNC_info->readVidBuf[pObj->gIPNC_info->rVBTail] == 0x65)
                    {
                        printf("\nGot a frame in multiple packets-End\n");
                        pObj->gIPNC_info->readSizeV += tmpSize;
                        tmpSize = 0;  //Reset this for next frame that comes in multiple packets
                    }

一直打印Got a frame in multiple packets-Start和Got a frame in multiple packets-middle，没有Got a frame in multiple packets-End，I帧接收不完整，请问这会是什么原因导致的？

如果数据源是1600*1200，是不是要在分辨率相关的地方增加匹配当前分辨率的部分，例如用到VSYS_STD_1080P_60，DC_MODE_1080P_60，FVID2_STD_1080P_60的地方。

Chu Hi，

抱歉，我测试的是dec+display的demo，你的错误是在接收网络码流部分。

Chris Hi，

感谢您的回复，如果用1920*1080的摄像头，能接收到packets-End，换1600*1200或者1024*1024的不行。接收网络码流的代码是RDK的，我只改了初始化时的长宽，为什么接收会有问题呢？

Chris Hi，

感谢您的回复，能不能让您熟悉这一块的同事也帮忙测试一下，我们的四路视频分辨率都不一样：

1920*1080,1024*1024,1600*1200,2048*1536，多谢！

从1600*1200的摄像头都到的数据是：

前面一堆5577那种数据，这种数据不对吧，收不到I帧